Added chat UI

app/MindWork AI Studio/Chat/ContentBlock.cs

@@ -0,0 +1,30 @@
+namespace AIStudio.Chat;
+
+/// <summary>
+/// A block of content in a chat thread. Might be any type of content, e.g., text, image, voice, etc.
+/// </summary>
+/// <param name="time">Time when the content block was created.</param>
+/// <param name="type">Type of the content block, e.g., text, image, voice, etc.</param>
+/// <param name="content">The content of the block.</param>
+public class ContentBlock(DateTimeOffset time, ContentType type, IContent content)
+{
+    /// <summary>
+    /// Time when the content block was created.
+    /// </summary>
+    public DateTimeOffset Time => time;
+    
+    /// <summary>
+    /// Type of the content block, e.g., text, image, voice, etc.
+    /// </summary>
+    public ContentType ContentType => type;
+    
+    /// <summary>
+    /// The content of the block.
+    /// </summary>
+    public IContent Content => content;
+
+    /// <summary>
+    /// The role of the content block in the chat thread, e.g., user, AI, etc.
+    /// </summary>
+    public ChatRole Role { get; init; } = ChatRole.NONE;
+}